/Engine/Source/Editor/UnrealEd/Public/Kismet2/BlueprintEditorUtils.h
Constructs a class picker widget for adding interfaces for the specified blueprint(s)
static [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [SWidget](API\Runtime\SlateCore\Widgets\SWidget) > ConstructBlueprintInterfaceClassPicker ( const [TArray](API\Runtime\Core\Containers\TArray)< [UBlueprint](API\Runtime\Engine\Engine\UBlueprint) * > & Blueprints, const FOnClassPicked & OnPicked )